java中用jxl方式读取Excel

本文介绍如何利用jxl库在Java中读取Excel文件,并解析为具体对象列表。通过示例代码展示了如何逐行读取数据并映射到自定义对象中。

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首先导入jxl的包,可以在网上下载

例如 读取一份存储有学生信息的Excel

public static List<Student> readExcel(String filePath){
  
  List<Student> students = new ArrayList<Student>();
    try { 
                 // 创建输入流,读取Excel 
                 InputStream is = new FileInputStream(filePath); 
                // jxl提供的Workbook类 
                Workbook wb = Workbook.getWorkbook(is);
                // Excel的页签数量 
                int sheet_size = wb.getNumberOfSheets(); 
                 for (int index = 0; index < sheet_size; index++) { 
                     // 每个页签创建一个Sheet对象 
                     Sheet sheet = wb.getSheet(index); 
                     // sheet.getRows()返回该页的总行数 
                     for (int i = 0; i < sheet.getRows(); i++) {  //代表行
                         // sheet.getColumns()返回该页的总列数 
                      Student  student = new Student();
                      //第一行为字段,所以跳过
                      if(i==0){
                       continue;
                      }
                       for (int j = 0; j < sheet.getColumns(); j++) {  //代表列
                             String cellinfo = sheet.getCell(j, i).getContents(); 
                            int  m =   sheet.getCell(j, i).getColumn();
                            switch(m){
                            case 0:
                             student.setNumber(Integer.parseInt(cellinfo));
                             break;
                            case 1:
                             student.setName(cellinfo);
                             break;
                            case 2:
                             student.setSex(cellinfo);
                             break;
                            case 3:
                             student.setAge(Integer.parseInt(cellinfo));
                             break;
                            case 4:
                             student.setAddress(cellinfo);
                             break;
                            }
                            // System.out.println(cellinfo); 
                         } 
                       students.add(student);
                     } 
                } 
          } catch (FileNotFoundException e) { 
                 e.printStackTrace(); 
             } catch (BiffException e) { 
                 e.printStackTrace(); 
             } catch (IOException e) { 
                 e.printStackTrace(); 
             }
             System.out.print(students.size());
  return students;
 }

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